/* =========================================================
   Crewdog.demo — Premium SaaS Landing Page
   Inspired by Stripe / Linear / Vercel
   - Pure CSS redesign (no functionality changes)
   - Dark + Light themes
   - Glassmorphism cards, gradient CTAs, micro-interactions
   ========================================================= */

/* ---------------- CSS TOKENS ---------------- */
:root {
    /* Light theme */
    --bg-light: #f9fafb;
    --bg-light-2: #ffffff;
    --card-light: rgba(255, 255, 255, 0.75);
    --text-light: #0f172a;
    --muted-light: #475569;
    --accent-light: #2563eb;
    --border-light: #e5e7eb;
    --ring-light: rgba(37, 99, 235, .45);
    --shadow-light: 0 4px 20px rgba(0, 0, 0, 0.06);
    --shadow-light-2: 0 16px 36px rgba(16, 24, 40, 0.1);
    --gradient-light: linear-gradient(135deg, #60a5fa, #3b82f6);

    /* Dark theme */
    --bg-dark: #0a0f1c;
    --bg-dark-2: #0f172a;
    --card-dark: rgba(17, 25, 40, 0.75);
    --text-dark: #f8fafc;
    --muted-dark: #94a3b8;
    --accent-dark: #38bdf8;
    --border-dark: rgba(255, 255, 255, 0.08);
    --ring-dark: rgba(56, 189, 248, .55);
    --shadow-dark: 0 6px 24px rgba(0, 0, 0, 0.6);
    --shadow-dark-2: 0 14px 40px rgba(0, 0, 0, .65);
    --gradient-dark: linear-gradient(135deg, #3b82f6, #6366f1, #06b6d4);

    /* Shared */
    --radius: 16px;
    --radius-sm: 12px;
    --transition: all 0.3s ease;
    --blur: blur(16px);
}

/* ---------------- GLOBAL ---------------- */
* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

html {
    font-size: 16px;
}

body {
    margin: 0;
    font-family: 'Inter', 'Satoshi', 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-light);
    background:
        linear-gradient(180deg, var(--bg-light) 0%, var(--bg-light-2) 100%);
    transition: background .3s ease, color .3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    isolation: isolate;
}

/* Dark background with subtle multi-stop glow */
html[data-theme="dark"] body {
    color: var(--text-dark);
    background:
        radial-gradient(1200px 800px at 20% -10%, rgba(96, 165, 250, .12), transparent 60%),
        radial-gradient(900px 700px at 100% 0%, rgba(34, 211, 238, .10), transparent 60%),
        radial-gradient(700px 700px at -5% 85%, rgba(167, 139, 250, .09), transparent 60%),
        linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-dark-2) 100%);
}

/* Ambient grid/vignette (very subtle) */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    background-image:
        linear-gradient(to right, rgba(255, 255, 255, .03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, .03) 1px, transparent 1px);
    background-size: 24px 24px, 24px 24px;
    mix-blend-mode: soft-light;
    opacity: .25;
}

/* ---------------- LAYOUT ---------------- */
.container {
    width: 100%;
    max-width: 1160px;
    margin: 0 auto;
    padding: 24px clamp(16px, 3vw, 28px);
    flex: 1 0 auto;
}

.grid {
    display: grid;
    gap: 22px;
}

.row-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.row-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}

/* ---------------- TOPBAR ---------------- */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 10px 0 18px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    letter-spacing: .2px;
}

.logo {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: var(--gradient-light);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, .06) inset, 0 6px 16px rgba(0, 0, 0, .25);
    position: relative;
}

.logo::after {
    content: "";
    position: absolute;
    inset: 2px;
    border-radius: 8px;
    background: linear-gradient(180deg, rgba(255, 255, 255, .20), rgba(255, 255, 255, 0));
    mix-blend-mode: screen;
}

html[data-theme="dark"] .logo {
    background: var(--gradient-dark);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, .06) inset, 0 10px 24px rgba(0, 0, 0, .5);
}

.brand h1 {
    margin: 0;
    font-size: clamp(18px, 3.4vw, 20px);
}

.right-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.subtitle {
    font-size: 12px;
    color: var(--muted-light);
}

html[data-theme="dark"] .subtitle {
    color: var(--muted-dark);
}

/* Theme toggle pill */
.toggle {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--border-light);
    background: var(--card-light);
    -webkit-backdrop-filter: var(--blur);
    backdrop-filter: var(--blur);
    padding: 6px 10px;
    border-radius: 999px;
    cursor: pointer;
    box-shadow: var(--shadow-light);
}

.toggle input {
    appearance: none;
    width: 40px;
    height: 22px;
    border-radius: 999px;
    background: #e2e8f0;
    position: relative;
    outline: none;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .05);
    transition: background .2s ease;
}

.toggle input:checked {
    background: linear-gradient(90deg, var(--accent-light), #06b6d4);
}

.toggle input::after {
    content: "";
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    border-radius: 999px;
    background: #fff;
    transform: translateX(0);
    transition: transform .22s cubic-bezier(.2, .6, .2, 1);
    box-shadow: 0 2px 6px rgba(0, 0, 0, .2);
}

.toggle input:checked::after {
    transform: translateX(18px);
}

html[data-theme="dark"] .toggle {
    border-color: var(--border-dark);
    background: var(--card-dark);
    box-shadow: var(--shadow-dark);
}

html[data-theme="dark"] .toggle input {
    background: #111827;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .06);
}

html[data-theme="dark"] .toggle input:checked {
    background: linear-gradient(90deg, #3b82f6, #06b6d4);
}

/* ---------------- BUTTONS ---------------- */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
    cursor: pointer;
    user-select: none;
    background: linear-gradient(180deg, var(--card-light), rgba(0, 0, 0, .02));
    border: 1px solid var(--border-light);
    color: var(--text-light);
    padding: 10px 14px;
    border-radius: 14px;
    font-weight: 650;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease, opacity .2s ease;
    box-shadow: var(--shadow-light);
}

.button:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-light-2);
}

.button:active {
    transform: translateY(0);
}

.button:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px var(--ring-light), var(--shadow-light-2);
}

.button.primary {
    color: #fff;
    background: var(--gradient-light);
    border-color: transparent;
}

html[data-theme="dark"] .button {
    background: linear-gradient(180deg, var(--card-dark), rgba(0, 0, 0, .2));
    border-color: var(--border-dark);
    color: var(--text-dark);
    box-shadow: var(--shadow-dark);
}

html[data-theme="dark"] .button:hover {
    box-shadow: var(--shadow-dark-2);
}

html[data-theme="dark"] .button:focus-visible {
    box-shadow: 0 0 0 4px var(--ring-dark), var(--shadow-dark-2);
}

html[data-theme="dark"] .button.primary {
    background: var(--gradient-dark);
}

/* ---------------- CARDS ---------------- */
.card {
    background: var(--card-light);
    border: 1px solid var(--border-light);
    -webkit-backdrop-filter: var(--blur);
    backdrop-filter: var(--blur);
    border-radius: var(--radius);
    padding: 20px clamp(16px, 2.2vw, 22px);
    box-shadow: var(--shadow-light);
    position: relative;
    overflow: clip;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-2px);
}

.card::before {
    /* subtle gradient border effect */
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, rgba(96, 165, 250, .35), rgba(34, 211, 238, .22), rgba(167, 139, 250, .20));
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    opacity: .25;
}

html[data-theme="dark"] .card {
    background: var(--card-dark);
    border-color: var(--border-dark);
    box-shadow: var(--shadow-dark);
}

/* Card text */
.card h3 {
    margin: 0 0 10px;
    font-size: clamp(17px, 2.8vw, 18px);
    letter-spacing: .2px;
}

.card p {
    margin: 0;
    color: var(--muted-light);
    font-size: clamp(13px, 2.7vw, 14px);
    line-height: 1.7;
}

html[data-theme="dark"] .card p {
    color: var(--muted-dark);
}

/* ---------------- HERO ---------------- */
.hero {
    padding: clamp(24px, 5vw, 36px);
    display: grid;
    gap: 16px;
    text-align: left;
    background:
        radial-gradient(1000px 600px at 10% 0%, rgba(96, 165, 250, .10), transparent 60%),
        radial-gradient(800px 520px at 90% 0%, rgba(34, 211, 238, .10), transparent 60%),
        var(--card-light);
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    -webkit-backdrop-filter: var(--blur);
    backdrop-filter: var(--blur);
    box-shadow: var(--shadow-light);
}

html[data-theme="dark"] .hero {
    background:
        radial-gradient(1000px 600px at 10% 0%, rgba(96, 165, 250, .10), transparent 60%),
        radial-gradient(800px 520px at 90% 0%, rgba(34, 211, 238, .10), transparent 60%),
        var(--card-dark);
    border-color: var(--border-dark);
    box-shadow: var(--shadow-dark);
}

/* Gradient headline (with vendor+standard background-clip) */
.hero h2 {
    margin: 0;
    font-size: clamp(26px, 5.6vw, 34px);
    line-height: 1.15;
    letter-spacing: .2px;
    background: linear-gradient(90deg, #111827, #1f2937 30%, #0f172a 60%, #111827);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

html[data-theme="dark"] .hero h2 {
    background: linear-gradient(90deg, #ffffff, #dbeafe 35%, #a5f3fc 70%, #ffffff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero p {
    font-size: clamp(14px, 2.8vw, 16px);
    color: var(--muted-light);
}

html[data-theme="dark"] .hero p {
    color: var(--muted-dark);
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 6px;
}

/* ---------------- STATS ---------------- */
.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 4px;
}

.stat {
    text-align: center;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    padding: 18px 14px;
    background: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(0, 0, 0, .02)), var(--card-light);
    box-shadow: var(--shadow-light);
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.stat:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-light-2);
    border-color: rgba(96, 165, 250, .35);
}

.stat .num {
    margin: 0 0 6px;
    font-weight: 900;
    letter-spacing: .3px;
    font-size: clamp(22px, 5.2vw, 28px);
    background: var(--gradient-light);
    -webkit-background-clip: text;
    /* Safari/Chrome */
    background-clip: text;
    /* Standard */
    color: transparent;
}

.stat .cap {
    font-size: 12px;
    color: var(--muted-light);
}

html[data-theme="dark"] .stat {
    border-color: var(--border-dark);
    background: linear-gradient(180deg, rgba(255, 255, 255, .03), rgba(0, 0, 0, .18)), var(--card-dark);
    box-shadow: var(--shadow-dark);
}

html[data-theme="dark"] .stat:hover {
    box-shadow: var(--shadow-dark-2);
    border-color: rgba(96, 165, 250, .28);
}

html[data-theme="dark"] .stat .num {
    background: var(--gradient-dark);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

html[data-theme="dark"] .stat .cap {
    color: var(--muted-dark);
}

/* ---------------- FOOTER ---------------- */
.footer {
    margin-top: 24px;
    background: linear-gradient(180deg, transparent, #eef2f7);
    border-top: 1px solid var(--border-light);
    padding: 22px 14px 26px;
    text-align: center;
    font-size: 12px;
    color: var(--muted-light);
}

.footer-nav {
    display: flex;
    gap: 18px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.footer a {
    color: inherit;
    text-decoration: none;
    font-weight: 700;
}

.footer a:hover {
    color: var(--accent-light);
    text-decoration: underline;
}

.footer-copy {
    opacity: .9;
}

html[data-theme="dark"] .footer {
    background: linear-gradient(180deg, transparent, #0f1319);
    border-top-color: var(--border-dark);
    color: var(--muted-dark);
}

/* ---------------- ACCESSIBILITY ---------------- */
a,
button,
.button,
input[type="checkbox"] {
    outline: none;
}

a:focus-visible,
.button:focus-visible {
    border-radius: 12px;
    box-shadow: 0 0 0 4px var(--ring-light), var(--shadow-light-2);
}

html[data-theme="dark"] a:focus-visible,
html[data-theme="dark"] .button:focus-visible {
    box-shadow: 0 0 0 4px var(--ring-dark), var(--shadow-dark-2);
}

/* ---------------- MICRO-ANIMATIONS ---------------- */
/* Logo pulse on first paint (opt-in: add .pulse-once to .logo via JS) */
@keyframes cd-pulse-once {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 rgba(96, 165, 250, 0);
    }

    40% {
        transform: scale(1.06);
        box-shadow: 0 0 0 10px rgba(96, 165, 250, .15);
    }

    70% {
        transform: scale(1.03);
        box-shadow: 0 0 0 0 rgba(96, 165, 250, 0);
    }

    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(96, 165, 250, 0);
    }
}

.logo.pulse-once {
    animation: cd-pulse-once 900ms cubic-bezier(.2, .8, .2, 1) both;
}

/* Theme switch ripple (apply class .theme-switching on <body> via JS) */
@keyframes cd-theme-ripple {
    0% {
        opacity: .45;
        transform: scale(.85);
    }

    80% {
        opacity: .18;
        transform: scale(1.25);
    }

    100% {
        opacity: 0;
        transform: scale(1.45);
    }
}

body.theme-switching::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(600px 600px at 85% 24%,
            rgba(96, 165, 250, .35),
            rgba(34, 211, 238, .22) 35%,
            rgba(255, 255, 255, 0) 60%);
    filter: blur(6px);
    animation: cd-theme-ripple 420ms ease-out forwards;
}

/* Knob “pop” (toggle input gets .pop via JS) */
@keyframes cd-knob-pop {
    0% {
        transform: translateX(0) scale(1);
    }

    40% {
        transform: translateX(0) scale(1.08);
    }

    100% {
        transform: translateX(0) scale(1);
    }
}

.toggle input.pop::after {
    animation: cd-knob-pop 260ms ease-out;
}

/* ---------------- RESPONSIVE ---------------- */
@media (max-width: 1040px) {
    .row-3 {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 780px) {
    .topbar {
        flex-wrap: wrap;
        gap: 10px;
    }

    .right-actions {
        margin-left: auto;
    }

    .row-3,
    .row-2,
    .stats {
        grid-template-columns: 1fr;
    }

    .card {
        padding: 18px;
    }

    .hero {
        padding: 24px;
    }
}

@media (max-width: 440px) {
    .button {
        padding: 9px 12px;
        border-radius: 12px;
    }

    .brand h1 {
        font-size: 16px;
    }
}